CVE-2025-14328 Affecting thunderbird package, versions <1:140.6.0esr-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-THUNDERBIRD-14400577
  • published12 Dec 2025
  • disclosed9 Dec 2025

Introduced: 9 Dec 2025

NewCVE-2025-14328  (opens in a new tab)

How to fix?

Upgrade Debian:unstable thunderbird to version 1:140.6.0esr-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.

CVSS Base Scores

version 3.1